目前国内闭式串片散热器的生产方法主要采用强穿、胶粘和锡焊。强穿工艺由于散热片孔部的塑性变形,达不到理想的过盈配合;胶粘工艺问题较多,主要是胶的高温老化问题至今未解决;锡焊工艺性差、能耗大。桑普公司研制的涨管工艺克服了以上不足,用该工艺生产的散热片,其热阻与焊接的相同,但工艺性好,适于大批量生产。 At present, the production methods of closed-type heat sinks in China mainly use strong wear, glue, and soldering. Strong wear technology due to plastic deformation of the heat sink hole, can not reach the ideal interference fit; adhesive process problems are many, mainly the problem of high temperature aging of the glue has not yet been resolved; soldering process is poor, high energy consumption. The riser process developed by Sangpu Co., Ltd. overcomes the above deficiencies. The heat sink produced by this process has the same thermal resistance as that of the solder, but it has good processability and is suitable for mass production.